Magnetic particle inspection (MPI) also known as magnetic particle testing (MPT) is a non destructive test (NDT) method used to check for surface and near-surface discontinuities in ferrous materials. Our magnetic particle testing is performed on-site or in one of our state-of-the-art laboratories. 

Because this method relies on a magnetic field to produce results, it works best on ferrous materials, like nickel, iron, cobalt, and some alloys. Components like billets, bars, castings, forgings, fasteners, weldments and extrusions are also commonly tested using magnetic particle inspection.


Magnetic particle inspection methods

Trust the NDT Experts at Element

Magnetic particle inspection can be performed using a wet or dry method, depending on the application. In both methods, the product is electrically charged to create a magnetic field. Then, ferrous iron particles are applied to the part in a dry or wet suspension. 

If there is a crack or other defect present, the particles will be attracted to the flaw and build up around the leakage to for an “indication.” The indication is then evaluated to determine the characteristics and cause of the defect. Results allow our Engaged Experts to understand the type and severity of any discontinuities on the part’s surface or sub-surface. 


Why choose Element for MPI testing?

By examining the nature, location and extent of an indication, our highly trained and experienced inspectors can determine the origin and cause of both surface and near-surface discontinuities. 

Element operates full-service non-destructive testing (NDT) and magnetic particle inspection laboratories that utilize advanced equipment capable of performing quality inspections for virtually any form of ferrous material, component or assembly.

For more information about our magnetic particle testing or to request a quote, contact us today. 

American Metal Society

AMS 2300, AMS2301, AMS 2303, AMS 2442, AMS 2640

American Petroleum Institute

API 1104

American Society of Mechanical Engineers

ASME Section V, ASME Section VIII, ANSI/ASME B31.3

American Society for Non-Destructive Testing

NDT 2, NDT 3

ASTM International

ASTM A275, ASTM E45 (Method A), ASTM E709, ASTM E1444

American Welding Society

AWS D1.1

Deutsches Institut fur Normung E.V.

DIN EN 10228-1,, DIN EN 1369, DIN EN ISO 10893-5, DIN EN ISO 17638, DIN EN ISO 9934-1, EN 1369, EN ISO 9934-1

Military Specification

MIL-I-6868, MIL-STD-1907, MIL-STD-1949, MIL-STD-271, MIL-STD-68E

National Aerospace Standard


Society of Automotive Engineers

SAE J420

Various Customer Approvals

Boeing, Bombardier, Douglas, Eaton, GE, Hamilton Sunstrand, Honeywell, Lockheed Martin, Northrop Grumman, Rolls Royce, Sikorsky

Our magnetic particle testing equipment

Magnetic Particle Inspection

Magna-tech GB 3568A

Contacts: 5,500 Amps | Coil: 2,800 Amps

A multi-directional stationary mag machine that features a 100-inch bed with a 1,000 pound hoist. This state-of-the-art equipment facilitates high-quality inspections in half the time of a conventional mag unit and reduces handling requirements, thereby decreasing lead times and increasing productivity. This unit accommodates specimens up to 12,000 pounds. 

Magnetic particle inspection

Magnaflux ARQ-1446

Contacts: 4,300 Amps | Coil: 2,700 Amps

This fast, reliable testing equipment features a 144-inch bed, which accommodates exceptionally long specimens. 

magnetic particle inspection

Hand-held Yokes, Prods and Cables

These portable devices accommodate onsite inspections of
larger components.

  • Eddy Current Testing
  • Liquid Penetrant Inspection
  • Radiographic Inspection
  • Ultrasonic Testing
  • Visual Inspection
  • Chemical Etching Services
  • Aluminum Cleaning Etch
  • Anodic Etch
  • Blue Etch Anodize
  • Macro Etch
  • Nital Etch
  • Pre penetrant Etch

Ready to request a quote?

Our deliverable is certainty - high quality data, test reports and certificates that you can absolutely rely on when making decisions about your materials and compliance. Engage with an expert today.

Our team of over 9,000 Engaged Experts in North America, Europe, The Middle East, Australia, Asia and Africa are ready to help you.